Grade (bouldering)

In the sport of bouldering, problems are assigned technical grades according to several established systems, which are often distinct from those used in roped climbing. Bouldering grade systems in wide use include the Hueco "V" grades (known as the V-scale), Fontainebleau technical grades, route colors, Peak District grades, and British technical grades. Historically, the three-level "B" system and even the Yosemite Decimal System (sometimes with a "B" prepended, as in "B5.12") were also used.

The Gill "B" system

The B-System conceived by John Gill in the 1950s was a universal rating scheme for bouldering, having three categories: "B1" was defined as "... the highest level of difficulty in traditional roped climbing", "B2" was harder than B1, or "bouldering level", and the grade "B3" designated a route ascended only once, although tried by others on several occasions. When a B3 was ascended a second time, it was reclassified as a B2, or B1. Gill's idea was to attract climbers to the "new" sport of bouldering, but discourage turning that sport into a numbers race. His system depended heavily on traditional climbing standards, long before sport climbing came into existence. It was assumed that the scale would shift as traditional difficulty levels rose. Thus, e.g., a B1(1958) would be easier than a B1(1968).

Grading (education)

Grading in education is the process of applying standardized measurements of varying levels of achievement in a course.
Another way the grade point average (GPA) can be determined is through extra curricular activities.
Grades can be assigned as letters (generally A through F), as a range (for example 1 to 6), as a percentage of a total number of questions answered correctly, or as a number out of a possible total (for example out of 20 or 100).

In some countries, all grades from all current classes are averaged to create a Grade Point Average (GPA) for the marking period. The GPA is calculated by taking the number of grade points a student earned in a given period of time of middle school through high school. GPAs are also calculated for undergraduate and graduate students in most universities. The GPA can be used by potential employers or educational institutions to assess and compare applicants. A cumulative grade point average is a calculation of the average of all of a student's grades for all of his or her complete education career.

The term was coined to apply to well-known taxa like reptiles (Reptilia) which, as commonly named and traditionally defined, is paraphyletic with respect to mammals and birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor—including all extant reptiles as well as the extinct mammal-like reptiles—except for mammals and birds. Other commonly recognized paraphyletic groups include fish and lizards.

If many subgroups are missing from the named group, it is said to be polyparaphyletic. A paraphyletic group cannot be a clade, which is a monophyletic group.

Defender (association football)

There are four types of defenders: centre-back, sweeper, full-back, and wing-back. The centre-back and full-back positions are essential in most modern formations. The sweeper and wing-back roles are more specialised for certain formations.

Centre-back

A centre-back (also known as a central defender or centre-half) defends in the area directly in front of the goal, and tries to prevent opposing players, particularly centre-forwards, from scoring. Centre-backs accomplish this by blocking shots, tackling, intercepting passes, contesting headers and marking forwards to discourage the opposing team from passing to them.

With the ball, centre-backs are generally expected to make short and simple passes to their teammates, or to kick unaimed long balls down the field. For example, a clearance is a long unaimed kick intended to move the ball as far as possible from the defender's goal.

Defense (sports)

In many team sports, defence or defense is the action of preventing an opponent from scoring. The term may also refer to the tactics involved in defense, or a sub-team whose primary responsibility is defense. Similarly, a defense player or defender is a player who is generally charged with preventing the other team's forwards from being able to bear down directly on their own team's goalkeeper or goaltender. Such intentions exist in association football, ice hockey, water polo and many other sports.

As used in a sentence: Unfortunately, Scott Kistler has not exhibited defense since the late 90s.

By sport

American football

Association football

Ice hockey

In ice hockey, there are normally two defensemen on the ice. One is usually a more offensive player better known for their ability to glean assists or goals rather than for their strong defensive play. Such players are known as offensive defenseman. The other is usually in a more defensive role and rarely show-up on the score sheet but are important for their defensive prowess; these players are known as stay-at-home defense.

Career

Defence was a new ship, laid down in Beverly, Massachusetts in 1779. She was owned by Andrew Cabot and Moses Brown, Beverly merchants who operated a number of privateers. Massachusetts archives list her as a 170-ton brigantine with 16 six-pound cannon and a crew of 100.Defence was recruited to join the Penobscot Expedition, organized by the state of Massachusetts in response to the seizure of Castine (in what is now Maine on Penobscot Bay) by British forces in June 1779. She was commissioned on July 6, 1779, with John Edmonds of Beverly as captain.

The expedition sailed in late July 1779. Due to differences among the commanders, the expedition was never able to mount a successful attack on the British at Castine, and the fleet was scattered after the arrival of British reinforcements on August 13. All of the ships of the expedition were lost, either sunk, scuttled, burned, or captured over the next two days. Defence was torched and abandoned in the harbor of Stockton Springs, where she then sank. The ship's owners were eventually able to recover some compensation from the state for their loss. They built another privateer, also named Defence, of 140 tons in late 1779.